a-ha aaaa aaab aaah aaas aaba aabb aabh aabt aaha aahs aasa aass aast aata aatt abaa abab abas abat abb- abba abbb abbs abbt abha abhs abs- absa abss abta abts ahab ahah ahas ahat ahha ahhs ahsa ahss ahta ahts asaa asab asah asas asat asba asha ashs asht assa assh asss asst asta astb asts at-t ataa atab atas atat atbs atha aths atsb atst atta atts baaa baah baas baat baba babb babs baha bahs baht basa bash bass bast bata bath bats batt bbas bbbb bbbs bbhs bhat bhhs bsaa bsas bsat bshs bsts btaa bths btss bttb haab haas haat haba habs habt haha hahs haht hasa hash hass hast hata hatb hath hats hatt hbbs hbhs hbss hhaa hhat hhhh hhhs hsas hsat hshs hsts htab hths saab saah saas saat saba sabb sabs saha sahs saht sasa sash sass sast sata satb sats satt sbaa sbas sbbs sbhs sbsa sbst shab shah shas shat shbs shbt shha shhh shhs shts ssaa ssab ssas ssat sshs sssa sssb sssh ssss ssta sstb ssth ssts stab stas stat stbs sths stss taa- taas taat taba tabb tabs taha tahs tasa tasb tash tass tast tata tatb tath tats tatt tbas tbbs tbhs tbst tbta thaa thas that thbs thss thtb thts tsaa tsat tshb tshs tssa tsst tsts ttab ttbb ttss tttt